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by trejan
Mon Jul 26, 2021 4:43 am
Forum: General
Topic: Current consumption on sleep modes
Replies: 9
Views: 155

Re: Current consumption on sleep modes

Not according to the first spec I looked at .... https://www.st.com/en/microcontrollers-microprocessors/stm32h7-series.html The table is listing stop mode with all RAM enabled. It greatly drops if you use D3 stop which will power off some blocks of RAM then it will still be less than the RP2040. Th...
by trejan
Mon Jul 26, 2021 3:40 am
Forum: General
Topic: Current consumption on sleep modes
Replies: 9
Views: 155

Re: Current consumption on sleep modes

pidd wrote:
Mon Jul 26, 2021 2:03 am
I think you would struggle to find a similar microcontroller (especially speedwise) with a lower current in full-standby mode.
Single digit µA standby isn't unusual. A dual core STM32 H7 with a Cortex-M7 + Cortex-M4 is < 3µA in standby.
by trejan
Sun Jul 25, 2021 8:40 pm
Forum: Compute Module
Topic: CM4 TWO Ethernet Port
Replies: 8
Views: 308

Re: CM4 TWO Ethernet Port

Do you need 2x gigabit Ethernet in addition to the one that is on the CM4? If not then single PCIe ethernet + onboard CM4 ethernet would do it.

Do you need the full gigabit throughput on both interfaces concurrently? Would using the CM4 ethernet as a trunk to an onboard switch chip with VLANs work?
by trejan
Sun Jul 25, 2021 4:14 pm
Forum: Raspberry Pi OS
Topic: keybounce right side keyboard pi 400
Replies: 3
Views: 92

Re: keybounce right side keyboard pi 400

Therefore it lacks the usb cable found on external keyboards with its own resistence and capacitor value's. The lack of USB cable has zero effect on timing. This is an issue with the keyboard itself with excessive bounce in the switches. If you're seeing it on the right side only then my guess is t...
by trejan
Sun Jul 25, 2021 4:07 pm
Forum: General discussion
Topic: AntiVirus solution for Pi - Raspbian OS (armhf architecture) ?
Replies: 21
Views: 715

Re: AntiVirus solution for Pi - Raspbian OS (armhf architecture) ?

Joop99 wrote:
Sun Jul 25, 2021 12:34 pm
To start with, how many users do have "alice" as user? Its not mentioned that "alice" is an example.
The choice of alice isn't completely random. alice is a widely used example in cryptography and security fields. The docs should be mentioned that alice is an example though.
by trejan
Sun Jul 25, 2021 3:31 am
Forum: Raspberry Pi 400
Topic: Will there be a Pi 800 ?
Replies: 39
Views: 1776

Re: Will there be a Pi 800 ?

That is a terrible article with zero content.
by trejan
Sat Jul 24, 2021 7:36 pm
Forum: Troubleshooting
Topic: gpu_mem=16 in /boot/config.txt causes bus-errors, panics etc.
Replies: 17
Views: 546

Re: gpu_mem=16 in /boot/config.txt causes bus-errors, panics etc.

cleverca22 wrote:
Sat Jul 24, 2021 6:25 pm
but start_cd is the "cut down" firmware with a large chunk of features missing
i believe adding "start_cd=1" to config.txt will switch over to that, and it could save ~2mb of gpu_mem, and impact how the rest is even used
It automatically uses start_cd when gpu_mem=16
by trejan
Fri Jul 23, 2021 5:49 pm
Forum: Troubleshooting
Topic: Trying (and failing) to compile newest Git
Replies: 5
Views: 131

Re: Trying (and failing) to compile newest Git

jojopi wrote:
Fri Jul 23, 2021 1:11 pm
(Why bash cannot take the "No such file or directory" as sufficient clue that something has changed, I do not know.)
That behaviour is part of the POSIX spec along with the hash table being enabled by default.
by trejan
Thu Jul 22, 2021 11:50 am
Forum: General discussion
Topic: What is that?
Replies: 16
Views: 574

Re: What is that?

They're Lenovo Thinkpads. You can see the logos on https://www.raspberrypi.org/app/uploads ... UB_020.jpg
by trejan
Wed Jul 21, 2021 3:49 pm
Forum: Beginners
Topic: Why is my hard drive full?
Replies: 13
Views: 530

Re: Why is my hard drive full?

ejolson wrote:
Wed Jul 21, 2021 3:45 pm
Good luck. My experience is file systems are like coffee cups: They make a painful mess if filled to the very top.
It should be fine. This isn't the root FS and lots of 101GB files sounds like Chia plots.
by trejan
Wed Jul 21, 2021 1:00 am
Forum: Troubleshooting
Topic: Some pi zero ground pin isn't working
Replies: 6
Views: 217

Re: Some pi zero ground pin isn't working

Here's some photos of my rpi zero: https://drive.google.com/folderview?id=1MPEOeUhowKd7k3PLdv3ya3MmfRcGUTos You've got bad solder joints on several pins. Pins 1, 6, 30 and 39 all show signs of insufficient wetting . There are likely others as well along with some suspect cold joints but it is hard ...
by trejan
Mon Jul 19, 2021 11:19 pm
Forum: Beginners
Topic: What happens! Pi suddenly won't start
Replies: 17
Views: 564

Re: What happens!

Your card is corrupt. The errors at the top is the kernel complaining that the filesystem has errors and it can't load necessary files to boot. It was most likely caused by a crash during the night or power loss.
by trejan
Mon Jul 19, 2021 6:42 pm
Forum: Troubleshooting
Topic: Different executed speed in app.
Replies: 10
Views: 244

Re: Different executed speed in app.

Does your app script run as root? Easiest way would be to add it there but the CPU would be slow until that point. The kernel configs on that github repo show that the powersave governor is the default. You can change it to use ondemand as the default. I don't know which config file is the correct o...
by trejan
Mon Jul 19, 2021 6:13 pm
Forum: Troubleshooting
Topic: Different executed speed in app.
Replies: 10
Views: 244

Re: Different executed speed in app.

It says 'powersave' Your buildroot install is using the powersave governor which runs the CPU cores at the minimum speed . This is why you're seeing a difference between your buildroot install and a Raspberry Pi OS Lite install. Setting it to ondemand should fix it. I don't know the proper setup fo...
by trejan
Mon Jul 19, 2021 5:37 pm
Forum: General discussion
Topic: multithreaded zip
Replies: 25
Views: 718

Re: multithreaded zip

kcajminer2312 wrote:
Mon Jul 19, 2021 5:35 pm
the tar.gz file isn't stored where I have set it
it is stored in the directory being compressed
Show the exact command you're running.
by trejan
Mon Jul 19, 2021 5:11 pm
Forum: Troubleshooting
Topic: Different executed speed in app.
Replies: 10
Views: 244

Re: Different executed speed in app.

What does "cat /sys/devices/system/cpu/cpufreq/policy0/scaling_governor" say?
by trejan
Mon Jul 19, 2021 4:54 pm
Forum: General discussion
Topic: multithreaded zip
Replies: 25
Views: 718

Re: multithreaded zip

kcajminer2312 wrote:
Mon Jul 19, 2021 4:49 pm
it doesn't even go to the right location for the archive
What?
by trejan
Mon Jul 19, 2021 4:54 pm
Forum: General discussion
Topic: multithreaded zip
Replies: 25
Views: 718

Re: multithreaded zip

kcajminer2312 wrote:
Mon Jul 19, 2021 4:49 pm
how's that any good, this is for a backup
You can't archive a socket and do not need to. It will be deleted and recreated next time it is needed.
by trejan
Mon Jul 19, 2021 4:46 pm
Forum: General discussion
Topic: multithreaded zip
Replies: 25
Views: 718

Re: multithreaded zip

kcajminer2312 wrote:
Mon Jul 19, 2021 4:11 pm
/home/pi/Documents/tmp/dhcpcd-pi/libdhcpcd-wpa-1110.0: socket ignored
That is socket for wpa_supplicant. As I previously said, it is left out of your tar archive because it will be recreated next time it is needed.
by trejan
Mon Jul 19, 2021 4:09 pm
Forum: General discussion
Topic: multithreaded zip
Replies: 25
Views: 718

Re: multithreaded zip

kcajminer2312 wrote:
Mon Jul 19, 2021 3:49 pm
I am getting socket ignored errors, it doesn't just work
What HermannSW wrote does work. socket ignored is because you're trying to archive a bunch of socket files. It is unrelated to the compression.

Those sockets will be recreated by whatever needs them next time.
by trejan
Sun Jul 18, 2021 4:03 pm
Forum: Arch
Topic: No USB with kernel 5.10.50 - xhci_hcd probe failed
Replies: 7
Views: 299

Re: No USB with kernel 5.10.50 - xhci_hcd probe failed

Here's the output from @trejan's commands: # cat /proc/cpuinfo | grep Model Model : Raspberry Pi 4 Model B Rev 1.1 # lspci -xxx -s 01:00.0 | grep 50: 50: a1 38 01 00 00 00 00 00 00 00 00 00 06 11 83 34 Okay. It isn't because the VL805 USB firmware was moved out of a dedicated EEPROM into the bootco...
by trejan
Sun Jul 18, 2021 3:27 pm
Forum: Arch
Topic: No USB with kernel 5.10.50 - xhci_hcd probe failed
Replies: 7
Views: 299

Re: No USB with kernel 5.10.50 - xhci_hcd probe failed

Run

Code: Select all

cat /proc/cpuinfo | grep Model
and

Code: Select all

sudo lspci -xxx -s 01:00.0 | grep 50:
Paste the results here.
by trejan
Sat Jul 17, 2021 12:26 am
Forum: General discussion
Topic: USB C hub not compatible with Raspberry Pi 4
Replies: 7
Views: 361

Re: USB C hub not compatible with Raspberry Pi 4

That was the state initially but somewhere along the line th default changed to disable that USB controller to save power as most folks won't be using it. Sorry but I don't have the supporting link to hand. Yep. https://www.raspberrypi.org/forums/viewtopic.php?f=28&t=290111&p=1886086#p1886086
by trejan
Sat Jul 17, 2021 12:24 am
Forum: Troubleshooting
Topic: No EEPROM bin file found
Replies: 8
Views: 307

Re: No EEPROM bin file found

One of my other Raspberry Pi 4 has a even newer update, wonder why my update did not upgrade to the July version? Different release tag - stable vs critical. Seems to be made way over complicated with many ways to end up with results, you'd think running the same command different computers would g...

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